Heat pump steam engine and phase change casing pipe type heat exchanger used for heat pump steam engine

Abstract

The invention discloses a heat pump steam engine. The heat pump steam engine comprises a refrigerant compressor, a steam compressor, a first-stage condenser, a second-stage condenser, an economizer, an evaporator, an oil cooler, a gas and liquid separator, an oil separator, a water inlet pump, a circular water pump, a heat source water tank, a pressure bearing water tank, a one-way valve, a firstfilter, a second filter, a first sight glass, a second sight glass, related connecting pipelines and a valve. The first-stage condenser is soaked in the pressure bearing water tank, the refrigerant compressor is sequentially connected with the oil separator, the first-stage condenser, the second-stage condenser, the first filter, the first sight glass, a liquid storage tank and the economizer, thetwo stages of condensers are adopted, the heat exchange area of a heat exchange coil pipe in the pressure bearing water tank can be reduced, a condensation heat releasing principle of the high-temperature and high-pressure refrigerant can be used, direct heat exchange is achieved to make steam, the heat pump steam engine is completely driven by power, a high-temperature working medium is adoptedfor circularly absorbing heat of a waste heat source, low-temperature steam is made, the steam compressor without oil and water lubricating is assisted, high-temperature steam is made, and heat efficiency is high.

Description

technical field [0001] The invention relates to the technical field of heat pump steam engines, in particular to a heat pump steam engine and a phase-change casing heat exchanger used for the heat pump steam engine, which can realize electric drive to produce saturated steam and conform to the development strategy of electric energy substitution. Background technique [0002] With the advancement of national energy consumption reform, air pollution prevention and control, and energy conservation and emission reduction low-carbon development strategies, the proportion of products driven by electric energy in the energy consumption market will increase significantly. At present, gas-fired boilers are generally used for steam supply in industrial park pipe networks, which have a low primary energy conversion rate, emit a large amount of CO2 and NOX, and have high initial installation costs. Correspondingly, the advanced high-temperature steam heat pump technology driven by elec...

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Problems solved by technology

[0003] At present, high-temperature heat pumps are used in the world to produce high-temperature and high-pressure hot water, and then high-pressure hot water is used to decompress and fl

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